Home / 3,930.48-5,895.80-3,146.85

Finding the Fourth Proportional to 3,930.48, 5,895.80 and 3,146.85

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Solution

The fourth proportional to 3,930.48, 5,895.80 and 3,146.85 is: 4,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.48 : 5,895.80 = 3,146.85 : x
  2. Step 2: Convert to fraction form
    3,930.48/5,895.80 = 3,146.85/x
  3. Step 3: Cross multiply
    3,930.48x = 5,895.80 × 3,146.85
  4. Step 4: Simplify right side
    3,930.48x = 18,553,198.23
  5. Step 5: Solve for x
    x = 18,553,198.23/3,930.48
  6. Step 6: Final answer
    x = 4,720.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.